diff --git a/requirements.txt b/requirements.txt
index e31ac79..7130445 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,6 +27,6 @@ requests==2.19.1
 retrying==1.3.3
 six==1.11.0
 traitlets==4.3.2
-urllib3==1.23
+urllib3==1.26.5
 Werkzeug==0.14.1
 wincertstore==0.2